[Digikam-devel] [Bug 224682] New: Colour Channel Mixer ui & usability

[Jens Mueller]

https://bugs.kde.org/show_bug.cgi?id=224682

           Summary: Colour Channel Mixer ui & usability
           Product: digikam
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: unspecified
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel at kde.org
        ReportedBy: tschenser at gmx.de


Version:           1.1 svn (using KDE 4.3.4)
Installed from:    Ubuntu Packages

When using colour channel mixer tool I discovered the following behaviour:
1. open tool, red histogram channel should be selected with the given values of
red:100, green: 0, blue: 0
2. I push the reset button behinds the red value box
3. red is zero now, ok this can easially be fixed

Next if you select another histogram channel, for example green the green
slider and box gets a value of 100 and blue and red 0. Not understandable to
the user why values change when you only change the view of histogram. Also,
why can I have different values for blue when switching between red and green
histogram channel? BTW, to which unit do the values align?

And the last question: What is the big difference between colour channel mixer
tool and colour balance tool? For me this looks only like two guis for the same
image operation, right?

Jens

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